Locking-nut.



. Nu 394,874. PATBNTED AUG. 4, 1908.

A. V. BRYCE.

LOOKING NUT.

APPLICATION FILED SEPTJG, 1907.

mew

in a turnin internally t 'readed tapered bushings adapted to engage the bolt under turning action of the nut and to gradually tighten upon it so ,moved.

UNITED STATES PATENT -()FFIC.

ANDREW V. BRYCE, OFPITTSBURG, PENNSYLVANIA, ASSIGNOIt TO INTER-STATE MANU- FACTURING COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF ARIZONA TERRITORY.

LOCKING-NUT.

ence being had tlierein to the accompanying drawing.

M invention consists in improvements in looking nuts-forbolts etc. of that class where- .nut is provided with separable as to prevent loosening.

The invention has for itsob'ect to a device of its character whic shall e si1n ple and efficient in construction, cheap to manufacture, so constructed that the nut and the contained separate bushings may be assembled and maintained in operative relation to each other withoutseparation duriu shipment or handling, and generally adapte to tightly hold the bolt without dangerof loosenin as shall be more fully hereinafter describe -Referring to the drawings: Figure 1 is a vertical sectional view showing the device secured upon the end of a-threaded bolt, indicated by the section line I. I. of Fig. 2. i Fig. 2 is a plan view of Fig. 1. Fig. 3 is a sectional view'similar to Fig. 1 at right an les thereto, indicated by the section line III. II.

of Fig. 2.. Fig. 4 is a sectional detail view of the outer nut detached. Fig. 5 is aplan view of the outer nut with the bushings re- Figs. 6 7 and 8 are detail views of one of the bushings detached.

2 is'a turning nut of any suitable form,-

either squareor hexagon, the middle interior portion of which is provided with downwardly narrowin tapered walls 3 as shown in Figs. 1, 3 an 4, adapted to receive the separate interior bushings 4 as shown in the sectional views.

"The upper face of nut 2 is provided with y arranged recesses 5 cut or formed per surface of the nut and adapte to receive ally projecting lu 7 01 each separate bush- .mg, at opposite si es as clearly shown. The

dee er un-recessed ortions of the nut 2 exten v upwardly for t e'full depth at each side ing Nuts, of

' rovide' Specification of Letters Patent. Application filed September 16, 1907; Serial No. 393,071.

Patented Aug. 4, 1908.

between recesses 5, as clearly shown in Fig. 4

and the tapered interior wall 3 of the nut is deflected into an. internal vertical wall which extends upwardly to the top and is provided with a bent over lip or fin 8, adapted to be bent over to engage a shoulder 9 of each 1 bushin 4 when inserted, the bushings pref-,- erablyli c 'other, while the sides 11 of lugs 7 also fit neatly within and against shoulders 6, for the same purpose.

The annular inclined interior wall 3 of the nut preferably terminates in an annular shoul der 12 at the base of the nut wherebyto pre- I vent undue downward travel of the bushing and gives a finished lower surface to the nut.

The bushin s may be made in any suitable manner, as by casting, with which method I have secured good results in practice, care being taken that the threads of the bushings are so arranged 'as to aline with each other at their terminals, for which purpose I make the bushings from different patterns so that when seated in the nut 2 their threads will form practically one continuous thread, be ing interrupted at opposite sides only b the slight intervening space 13, as clearly s own in Figf'2'; The function of such space is that as the nut 2 is screwed around upon its seat, and further motion being imparted to the bushings, they will be fed downwardly upon the bolt by its threads andwill be drawn inwardly by reason of the tapered faces 3, and

.the corres onding tapered faces around the semi-circu ar exterior-of each bushing 4. It will .be understood of course that the degree of taper in the nut and bushings is preferably the sameto insure a goodbearing throu bout the entire length of the bushings. hen thus assembled'and a plied, the nut may be screwed down until it ias been turned to the desired tension whereupon the bushings will firmly grasp the bolt, and at the same time hold the nut in its seated position. As thus assembled the complete device will act to securely hold any parts of mechanism to which it is applied, by meansof the bolt, and disengagementjor looseningwill be absolutely prevented: Should, for any reason, the

parts becomeloose, lengthening of the sidered as Within the scope of the following claims.

What I claim is:

1. A locking nut comprising an outer interiorly tapered portion and a plurality of inner bushings with corresponding outer tapered faces and interior threads, said outer portions having inwardly bent lips for holdin the'parts in engagement With each other, substantially as set forth.

2. A locking nut consisting of an outer nut 1 having an interior tapered cavity and oppositely arranged recesses and intervening an- -nular extensions terminating in shoulders and provided With thin. retaining'lips, and a plurality of bushings having corresponding exterior tapered faces and interior threads and laterally extending top abutments adapted to seat in said recesses With intervening annular portions adapted tobe engaged by the retaining lips when bent over, substantially as set forth.

31' In a locking nut, the combination of an outer nut having an Interior tapered cavity at its middle portion and provided at one end with oppositely arranged recesses between embracing shoulders and annularly arranged thin projecting lips extending between said shoulders; and-a bushing having correspondingly tapered -e \*terior l aces and interior threads, provided at one end with laterally arranged abutments adapted to seat in said recesses, \vith intervening annularly arranged clearance spaces for making lockin engagement with said annularly arranged projecting lips of the outer nut, substantially as set forth.

4. In a locking nut, the COII'lblIHLtlOIi of an outer nut having an interior tapered cavity at its middle portion and provided at one end with oppositely arranged recesses between embracing shoulders and annularly arranged thin projecting lips extending between said shoulders: and plurality of bushings having correspolnlingly taperedexterior faces and interior threads, provided at one endwitlr laterally arranged abutments adapted to seat in said recesses, with intervening annularly arranged clearance spaces for making locking engagement with said annularly arranged projecting lips of the outer nut, substantially as set forth. Y

5. In a device of the class described, generally semi-cylindrical bushing having a semi-circular base )ortion bounded by a smooth, tapered wal, recessed at opposite sides to provide clearance and shoulders for the loekin device, and.=having a laterally extending locking lug at one side of its top, the opposite face of the bushing at each Sir e of the intervening seini-cyli-ndrieal threaded cavity being flat, substantially as set forth.

In testimony whereof I aflix my signature in presence of two Witnesses.

ANDREW V BRYCE.

ivnesses:

GEO. B. BLEMING, C. M. CLARKE.

Cir 

